Table 3 in Delphinid brain development from neonate to adulthood with comparisons to other cetaceans and artiodactyls

<p><i>Table 3.</i> Gestation and brain size. The predicted gestation period was derived by applying the Sacher and Staffeldt formula and using our brain mass data. Sheep (<i>O. aries</i>), cows (<i>B. taurus</i>), giraffes (<i>G. camelopardalis</i>), and hippopotamuses (<i>H. amphibius</i>) were included in the table to compare cetaceans to other members of the Cetartiodactyla taxonomic order. Humans (<i>H. sapiens</i>) were also included for comparison. Cetaceans appear to have similar neonatal/adult brain mass ratios compared to other animals of the Cetartiodactlya order. Sources for the published gestation durations and cetacean brain masses can be found in Table S1.</p><table><thead><tr><th></th><th></th><th></th><th></th><th>Published</th><th>Predicted</th></tr></thead><tbody><tr><th>Taxonomic family</th><td>Neonatal</td><td>Adult brain</td><td>Neonate/</td><td>gestation</td><td>gestation</td></tr><tr><th>Genus species</th><td>brain mass (g)</td><td>mass (g)</td><td>adult (%)</td><td>(days)</td><td>(days)</td></tr><tr><th colspan="6">Delphinidae</th></tr><tr><th><i>C. commersonii</i></th><td>370</td><td>783</td><td>47.3</td><td>334</td><td>324</td></tr><tr><th><i>D. delphis</i></th><td>430</td><td>715</td><td>60.2</td><td>363</td><td>359</td></tr><tr><th><i>G. griseus</i></th><td>796</td><td>2,132</td><td>37.3</td><td>410</td><td>386</td></tr><tr><th><i>L. acutus</i></th><td>733</td><td>1,285</td><td>57</td><td>365</td><td>401</td></tr><tr><th><i>L. obliquidens</i></th><td>523</td><td>1,198</td><td>43.6</td><td>356</td><td>352</td></tr><tr><th><i>O. orca S. attenuata S. longirostris</i></th><td>3,006 353 247</td><td>6,642 711 541</td><td>45.3 49.6 45.6</td><td>553 &mdash; &mdash;</td><td>566 304a 286a</td></tr><tr><th><i>S. bredanensis</i></th><td>706</td><td>1,454</td><td>48.6</td><td>378</td><td>388</td></tr><tr><th><i>T. truncatus</i></th><td>685</td><td>1,550</td><td>44.2</td><td>376</td><td>377</td></tr><tr><th colspan="6">Monodontidae</th></tr><tr><th><i>D. leucas</i></th><td>938</td><td>2,087</td><td>44.9</td><td>456</td><td>414</td></tr><tr><th colspan="6">Phocoenidae</th></tr><tr><th><i>P. phocoena</i></th><td>242</td><td>506</td><td>47.7</td><td>316</td><td>266</td></tr><tr><th><i>P. dalli</i></th><td>270</td><td>803</td><td>33.6</td><td>334</td><td>282</td></tr><tr><th colspan="6">Physeteridae</th></tr><tr><th><i>P. macrocephalus</i></th><td>3,308</td><td>7,693</td><td>43</td><td>547</td><td>582</td></tr><tr><th colspan="6">Pontoporiidae</th></tr><tr><th><i>P. blainvillei</i></th><td>154.9</td><td>223.9</td><td>69.2</td><td>319</td><td>271</td></tr><tr><th colspan="6">Ziphiidae</th></tr><tr><th><i>M. europaeus</i></th><td>971</td><td>1,680</td><td>57.8</td><td>&mdash;</td><td>&mdash;</td></tr><tr><th colspan="6">Balaenopteridae</th></tr><tr><th><i>B. physalus</i></th><td>2,640</td><td>6,718</td><td>39.3</td><td>342</td><td>537</td></tr><tr><th>Bovidae <i>B. taurus O. aries</i></th><td>199b 69</td><td>456b 130d</td><td>43.6 53</td><td>278c 150e</td><td>270 208</td></tr><tr><th>Giraffidae <i>G. camelopardalis</i></th><td>428f</td><td>537f</td><td>79.7</td><td>459c</td><td>363</td></tr><tr><th>Hippopotamidae <i>H. amphibius</i></th><td>195b</td><td>590b</td><td>33.1</td><td>240e</td><td>258</td></tr><tr><th>Hominidae <i>H. sapiens</i></th><td>380g</td><td>1,400b</td><td>27</td><td>280e</td><td>324</td></tr></tbody></table><p>^a Perrin <i>et al.</i> (1977).</p><p>^b Sacher and Staffeldt (1974).</p><p>^c Kiltie (1982).</p><p>^d Minervini <i>et al.</i> (2016).</p><p>^e Hayssen <i>et al.</i> (1993).</p><p>^f <i>Gra&Dot;&imath;c et al.</i> (2017).</p><p>^g Blinkov and Glezer (1968).</p>